BOD Test – Biological Oxygen Demand Test
7 min read 
Objectives of BOD Test Principle of BOD Test Under alkaline circumstances (by adding Alkaline-iodide-azide), manganese sulphate precipitates manganese hydroxide as a white precipitate. This combines with the sample’s dissolved oxygen to generate a brown precipitation. On an acidic environment, manganese changes to its divalent form and releases iodine. This released iodine is titrated using starch … Read more